Craftsman 1/2HP Garage Door Opener 139.53515SR - Manual (Page 4)

FEATURES OF YOUR OPENER
1. Motor: Permanently lubricated with automatic reset.
2. Opener Lights: Turn on and off automatically with ЛУг
minute illumination for your safety and convenience.
Provide constant fight when Light Feature is activated.
3. Safety System: Independent up and down force
adjustment. The door reverses automatically when
obstructed in DOVVN direction. The door STOPS when
obstructed in UP position
4. Easy Limit Adjustment: Limits of door opening and
closing adjust^ by turning screws without removing
chassis cover.
5. Digital Radio Controls: The code can be easily
changed by the owner,
6. Emergency Disconnect: Pull cord disconnect permits
manual door operation.
7. 3-Function Transmitter: Has three push buttons. Each
button can activate one or more remote control devices.
Opener is factory preset to activate when LARGE push
button on transmitter is pressed.
8. Automatic Reconnect: The trolley halves reconnect
for automatic operation when the opener is energized
after emergency disconnect.
9. Lock Push Button: When Lock Feature is activated,
opener will not operate from portable transmitters. Door
will OPEN from Wall Control push bar, Key Switch and
Touch Code Transmitter accessories, described below.
Door will CLOSE if Wall Control push bar is pressed
and held through a complete down cycle. If push bar
is released before travel Is completed, door will reverse.
SPECIFICATIONS
MOTOR
Type................................ Permanent split capacitor
Speed............................. 1500 rpm
\folts...............................120 Volts AC - 60 Hz. Only
Current.......................... 45 amperes
DRIVE MECHANISM
Gears.............................. 16:1 worm gear reduction
Drive.............................. Chain & cable with two-piece trolley on
steel Tee-rail
Length of travel............ Adjustable to Th leet
Travel rate......................6 to 8 inches per second
Lamps............................ On when door starts in travel, off 4’A
minutes after stop. Constant light when
Light Control is ON.
Door linkage..................Adjustable door arm. Pull cord trolley
release.
SAFETY
Personal........................Push button and automatic reversal in
down direction. Push button and
Automatic stop in UP direction
Electronic......................Independent UP and DOWN force
adjustment screws
Electrical....................... Motor overload protector & low voltage
push button wiring
Limit device................. Circuit actuated by limit nut
Limit adjustment.......... Screwdriver adjustment on side panel
Start circuit...................Low voltage push button or radio
control
DIMENSIONS
Length (overall)............124 inches
Headroom required .. 2 inches
Hanging weight............ 32 pounds
ACCESSORIES
Sears offers many useful accessories for your garage door opener. They are illustrated below with sears stock
numbers and descriptions.
53778 _^^ EXTRA TRANSMITTER:
Standard size. Includes visor clip.
53758
EXTRA TRANSMITTER:
Mini.
53703
OUTDOOR KEY SWITCH:
Opens the garage door automatically
from outside when transmitter is not
handy.
53709 DOOR CLEARANCE BRACKETS:
(For Sectional Doors Only)
Replace top brackets and rollers on
door to reduce height of door travel.
For use when installing opener in
garage with low headroom clearance.
53710
53717
53776
53702
INFRARED REVERSING SENSOR:
An optional system which provides
auxiliary support to the safety features
built into your opener. If the sensor's
invisible beam is broken, a closing
door will reverse and an open door will
not close.
OPEN DOOR INDICATOR:
Provides an illuminated signal when
your garage door is open.
TOUCH CODE TRANSMITTER:
Enables homeowner to operate garage
door opener from outside by entering
code on specially designed keyboard.
EMERGENCY RELEASE KEYLOCK
REQUIRED for a garage with NO
service door.
Allows manual operation of garage
door from outside in case of power
failure.